A factory reset will reset the Smart TV back to default settings. This is typically done when there is a problem that can only be fixed with a reset or if you want to sell or give it away. This process will remove all customized TV settings, including tuned channels, recordings, custom input names, installed applications, stored Wi-Fi passwords, etc.
2. Factory Reset
Restoring your device to its factory default settings will remove all user data.
Power on your TV.
Press the Menu button.
Select Support, then Enter.
Choose Self Diagnosis, then Enter.
Select Reset, then Enter.
Enter your Security PIN. The default PIN is 0000.
The default PIN code is 0000. If you changed the password in the past and now can't remember it, you can reset it by powering off the TV then entering the following on your remote control: Mute > 8 > 2 > 4 > Power.
The factory reset screen will show a warning message. Tap Yes to confirm factory reset.
During the process, TV may turn off and on and will display the Setup screen.